Test your site every minute – it's free

State Colors

The following colors are used in the bars in the waterfall chart to indicate the different stages of a
request.

DNS

The web browser is looking up DNS information

SSL

The web browser is performing a SSL handshake

Connect

The web browser is connecting to the server

Send

The web browser is sending data to the server

Wait

The web browser is waiting for data from the server

Receive

The web browser is receiving data from the server

Content Types

The following icons are used to indicate different content types.

HTML

HTML document

Javascript

JavaScript file

CSS

CSS file

Image

Image file

Text/plain

Plain text document

Other

Any other content type, for example flash files

Warning

The request got a 4XX, 5XX response or couldn’t be loaded

Redirect

The request got a 3XX response and was redirected

Server Response Codes

To make it easy for you to differentiate between the HTTP response codes in the waterfall chart, we’ve
color-coded the text and background of each URL.

URL

2xx

The server responded with a successful code

URL

3xx

The request was redirected to another target

URL

4xx

A client error occured, for example 404 page not found

URL

5xx

A server error occured, for example 500 internal server error

URL

Error

Connection error, no response from the server

Nobody Likes a Slow Website

We built this Website Speed Test to help you analyze the load speed of your websites and learn how to make
them faster. It lets you identify what about a web page is fast, slow, too big, what best practices you’re
not following, and so on. We have tried to make it useful both to experts and novices alike.

In short, we wanted it to be a easy-to-use tool to help webmasters and web developers everywhere optimize the performance of their websites.

Feature Overview

Examine all parts of a web page – View file sizes, load times, and other details about
every single element of a web page (HTML, JavaScript and CSS files, images, etc.). You can sort and
filter this list in different ways to identify performance bottlenecks.

Performance overview – We automatically put together plenty of performance-related
statistics for you based on the test result

Performance grade and tips – See how your website conforms to performance best
practices from Google Page Speed (similar to Yahoo’s Yslow). You can get some great tips on how to speed
up your website this way.

Trace your performance history – We save each test for you so you can review it later
and also see how things change over time (with pretty charts!).

Test from multiple locations – See how fast a website loads in Europe, the United
States, etc.

Share your results – We’ve made it easy for you to perform a test and share it with
your friends, work colleagues or web host.

How it works

All tests are done with real web browsers, so the results match the end-user experience exactly. We use a
bunch of instances of Google’s Chrome web browser to load websites, record performance data, and so on.
Tests are done from dedicated Pingdom servers.

About Pingdom

Pingdom offers cost-effective and reliable server, network and website monitoring. We use a global
network of servers to monitor our customers' sites 24/7, all year long. The service includes statistics
for uptime and response time, and can send out alerts via SMS, email, and more.

Follow Pingdom

Pingdom Tools on your website

If you like Pingdom Tools you can include a banner on your website that lets all your visitors use it.
You add it with just a few lines of HTML code. The Pingdom Tools banner is available on our "Link to us" page.